INDIANAPOLIS -- Chicago Bears head coach John Fox and general manager Ryan Pace were conspicuously vague on the prospects of re-signing veteran unrestricted free agents linebacker Lance Briggs and cornerback Charles Tillman. "Anytime you come to an organization and there's been guys like Charles Tillman, Lance Briggs ... they've been great Bears," Fox said Wednesday at the NFL combine. "They've accomplished a lot, done a lot for our organization and our football team, as well as our city.